Stabilize x86 F16C

[VoidStarKat]

Resolves #1234

Compiler PR for stabilizing corresponding target_feature: rust-lang/rust#106323

[rustbot]

Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @Amanieu (or someone else) soon.

[Amanieu]

@rfcbot fcp merge

[rfcbot]

Team member @Amanieu has proposed to merge this. The next step is review by the rest of the tagged team members:

• @Amanieu
• @BurntSushi
• @dtolnay
• @joshtriplett
• @m-ou-se

No concerns currently listed.

Once a majority of reviewers approve (and at most 2 approvals are outstanding), this will enter its final comment period. If you spot a major issue that hasn't been raised at any point in this process, please speak up!

See this document for info about what commands tagged team members can give me.

[VoidStarKat]

rust-lang/rust#106323 was merged, which stabilized the target feature

[rfcbot]

🔔 This is now entering its final comment period, as per the review above. 🔔

psst @Amanieu, I wasn't able to add the final-comment-period label, please do so.

[rfcbot]

The final comment period, with a disposition to merge, as per the review above, is now complete.

As the automated representative of the governance process, I would like to thank the author for their work and everyone else who contributed.

This will be merged soon.

psst @Amanieu, I wasn't able to add the finished-final-comment-period label, please do so.

[Shnatsel]

Github shows that this was merged after the release of Rust 1.68, but the attributes still indicate #[stable(since = "1.68.0")]. Is that intentional? If not, perhaps the attributes should be updated?